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Titolo:
PROBING THE EARTH BOW SHOCK WITH UPSTREAM ELECTRONS
Autore:
LARSON DE; LIN RP; MCFADDEN JP; ERGUN RE; CARLSON CW; ANDERSON KA; PHAN TD; MCCARTHY MP; PARKS GK; REME H; BOSQUED JM; DUSTON C; SANDERSON TR; WENZEL KP; LEPPING RP;
Indirizzi:
UNIV CALIF BERKELEY,SPACE SCI LAB BERKELEY CA 94720 WASHINGTON UNIV,GEOPHYS PROGRAM SEATTLE WA 00000 CTR ETUD SPATIALE RAYONNEMENTS TOULOUSE FRANCE EUROPEAN SPACE AGCY,ESTEC,DEPT SPACE SCI NL-2200 AG NOORDWIJK NETHERLANDS NASA,GODDARD SPACE FLIGHT CTR,EXTRATERR PHYS LAB GREENBELT MD 20771 UNIV CALIF BERKELEY,DEPT PHYS BERKELEY CA 94720
Titolo Testata:
Geophysical research letters
fascicolo: 17, volume: 23, anno: 1996,
pagine: 2203 - 2206
SICI:
0094-8276(1996)23:17<2203:PTEBSW>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERPENDICULAR COLLISIONLESS SHOCKS; SOLAR-WIND ELECTRONS; ACCELERATION; DISTRIBUTIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
D.E. Larson et al., "PROBING THE EARTH BOW SHOCK WITH UPSTREAM ELECTRONS", Geophysical research letters, 23(17), 1996, pp. 2203-2206

Abstract

We present detailed measurements from the WIND 3D Plasma and Energetic Particle experiment of electron distributions in the deep foreshock,well away from the foreshock boundaries. Both electrons escaping fromthe magnetosheath and solar wind electrons reflected by the strong magnetic field of the shock are observed. The loss cone angle that separates the reflected electrons from the escaping magnetosheath electronscan be determined as a function of electron energy. At lower energies, the loss cone angle increases because the cross-shock potential tends to pull electrons into the magnetosheath. The loss cone angle is typically less than or equal to 30 degrees at energies greater than or equal to 100 eV, corresponding to peak shock magnetic field to local magnetic field ratio of greater than or equal to 5, while the loss cone variation with energy gives typical shock potentials of similar to 85 V. Thus the measurements of back-streaming foreshock electrons can be used as a tool to remotely probe the characteristics of the bow shock.

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Documento generato il 07/07/20 alle ore 12:45:02